Creating Java array of Classes

Ruby JRuby
1

Hi,

I’m trying to use Java’s (1.6) URLConnection with JRuby and all has gone
well except when I’m trying use the getContent method.

The method signature is “getContent(Class[] classes)” as it needs to
know the class type to convert the response too.

However I try to create the required array of type class (I only need
one element that’s a java string class) it complains and refuses to take
the array I’ve given.

The closest I’ve got is…

    class_array = Array.new
    class_array << JavaLang::String.class
    java_class_array = class_array.to_java JavaLang::String.class
    content = connection.get_content java_class_array

Which generates the following error…
unable to convert array to type: Class

I’ve run out of ideas as too how to create the array needed.

Any ideas or help to get around this would be greatly appreciated.

Cheers, Phil

2

On Sat, Jan 16, 2010 at 2:23 PM, Phil O. [email protected]
wrote:

The closest I’ve got is…

    class_array = Array.new
    class_array << JavaLang::String.class
    java_class_array = class_array.to_java JavaLang::String.class
    content = connection.get_content java_class_array

Which generates the following error…
    unable to convert array to type: Class

Try this:

âž” jruby -rjava -e “p ([java.lang.String].to_java java.lang.Class)”
[Ljava.lang.Class;@35e6e3

And avoid the JavaLang-style package modules; they’re subject to
change and kind of deprecated.

  • Charlie

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